Author Topic: Crunchy 1st gear, erratic GPI  (Read 3713 times)

Offline thebob

  • ^ Motobrick Curious
  • Posts: 70
  • K100RS
Crunchy 1st gear, erratic GPI
« on: April 30, 2012, 08:27:35 PM »
The lower gears sound a bit crunchy as I let out the clutch. The GPI stooped showing 5th and often shows N and 0 when in first.

Is it time to pull off the transmission, and lube the splines, or is it a clutch adjustment and referb the clocks?
1984 K100RS Japan Motobrick!

Offline frankenduck

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  • Posts: 5511
Re: Crunchy 1st gear, erratic GPI
« Reply #1 on: April 30, 2012, 08:43:07 PM »
Have you checked the gear oil level in the trans?

The GPI thing is most likely a separate issue and a 25 year old plastic switch falling apart.  They lead a hard life down there.
Once I had a Collie pup. Dug a hole and covered him up. Now I sit there by the hour. Waiting for a Collie-flower.
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Offline thebob

  • ^ Motobrick Curious
  • Posts: 70
  • K100RS
Re: Crunchy 1st gear, erratic GPI
« Reply #2 on: May 01, 2012, 10:47:43 PM »
Well the GPI seems to have cured itself. The "crunchy" ness has been troubleshot. I checked the transmission and final drive levels.

The final drive is at the bottom of the threads, but using the handy, dandy line on my C wrench I discovered that the transmission is about 5mm too full. They were both changed about 4,000 km ago and still have a light straw appearance. I'm going to give it a good leaving alone.

I did however find that the heat shield on the exhaust pipe has a broken front bracket. Amazingly all of the hex screws came out without any drama. I have decided to run my brick in superleggera form, or whatever the german may be, and left the stupid, rust prone rattly piece off!

Should I grind off the little brackets?

Is the starter bendix a known problem? My crunchiness is intermittent and usually worst on starting.
1984 K100RS Japan Motobrick!

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